Home / 18,630,663.40-27,938,329.26-7,120,381.96

Finding the Fourth Proportional to 18,630,663.40, 27,938,329.26 and 7,120,381.96

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Solution

The fourth proportional to 18,630,663.40, 27,938,329.26 and 7,120,381.96 is: 10,677,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630,663.40 : 27,938,329.26 = 7,120,381.96 : x
  2. Step 2: Convert to fraction form
    18,630,663.40/27,938,329.26 = 7,120,381.96/x
  3. Step 3: Cross multiply
    18,630,663.40x = 27,938,329.26 × 7,120,381.96
  4. Step 4: Simplify right side
    18,630,663.40x = 198,931,575,655,444.16
  5. Step 5: Solve for x
    x = 198,931,575,655,444.16/18,630,663.40
  6. Step 6: Final answer
    x = 10,677,643.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.